47453239 has 4 divisors (see below), whose sum is σ = 50244624. Its totient is φ = 44661856.

The previous prime is 47453227. The next prime is 47453261. The reversal of 47453239 is 93235474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93235474 = 2 ⋅46617737.

It is not a de Polignac number, because 47453239 - 2⁵ = 47453207 is a prime.

It is a super-2 number, since 2×47453239² = 4503619783182242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47453198 and 47453207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47453269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395667 + ... + 1395700.

It is an arithmetic number, because the mean of its divisors is an integer number (12561156).

Almost surely, 2^47453239 is an apocalyptic number.

47453239 is a deficient number, since it is larger than the sum of its proper divisors (2791385).

47453239 is a wasteful number, since it uses less digits than its factorization.

47453239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791384.

The product of its digits is 90720, while the sum is 37.

The square root of 47453239 is about 6888.6311412355. The cubic root of 47453239 is about 362.0389420170.

The spelling of 47453239 in words is "forty-seven million, four hundred fifty-three thousand, two hundred thirty-nine".